NTAC Gamma-Ray Power Conversion for Nuclear Propulsion
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Solution Overview
Problem
Conventional nuclear propulsion systems, such as Nuclear Thermal Propulsion (NTP) and Nuclear Electric Propulsion (NEP), inefficiently utilize the full energy output of nuclear fission reactions, discarding approximately 13.3 MeV of photon energy without conversion, and require heavy radiation shielding to protect against gamma rays, increasing system weight and complexity.
Innovation Solution
Integration of a Nuclear Thermionic Avalanche Cell (NTAC) with NTP or NEP systems to convert gamma ray energy into electrical power, utilizing high-energy photons and particles from nuclear fission reactions for direct power generation, while serving as a radiation shield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional radiation shielding is used to protect against gamma rays, then system reliability is improved, but system weight and complexity increase
Solution Approach 1:
The patent converts harmful gamma radiation into beneficial electrical energy by using a thermionic converter that directly transforms gamma ray energy into electricity. This eliminates the need for separate radiation shielding systems while simultaneously generating power for the propulsion system, thus resolving the contradiction between reliability and complexity.
Solution Approach 2:
The thermionic converter serves multiple functions: it acts as both a power generation device and a radiation shielding system. By integrating these two functions into a single component, the system achieves reliable gamma ray protection without increasing overall system complexity.
2Device complexity
If gamma ray energy is discarded without conversion, then device complexity is reduced, but energy utilization efficiency deteriorates
Solution Approach 1:
The patent transforms previously discarded gamma ray energy into useful electrical power through direct thermionic conversion. This eliminates energy waste while maintaining relatively simple device architecture, thus resolving the contradiction between energy utilization efficiency and device complexity.
Solution Approach 2:
The system uses its own waste gamma radiation to generate additional power, making the energy conversion process self-sufficient. The gamma rays that would otherwise be discarded are automatically converted into electricity to power the propulsion system, improving energy efficiency without requiring external energy sources.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The NTAC system effectively harnesses and converts gamma ray energy into high-density electrical current, enhancing propulsion efficiency and reducing the overall weight and complexity of the propulsion system by utilizing otherwise discarded energy, thereby improving power generation and reducing shielding requirements.
Implementation Method 1
Nuclear Thermionic Avalanche Cell (NTAC) configured to generate electrical power... the emitter may be configured to capture primary high energy photons and energetic particles such as beta particles and induced high energy field of photons, from the nuclear reactor core... The captured photons may free up a large number of electrons in an avalanche process from deep and intra-bands of atoms
Implementation Method 2
the emitter may be configured to capture primary high energy photons... The captured photons may free up a large number of electrons in an avalanche process from deep and intra-bands of atoms, including electrons from the outermost shell of atoms
Implementation Method 3
The captured photons may free up a large number of electrons in an avalanche process from deep and intra-bands of atoms... a large number of avalanche electrons that are emitted from the emitter may pass through the thermionic vacuum gap and may arrive at the collector to output a high-density electrical current
Implementation Method 4
most conventional NTP and NEP system designs include a safety feature to shield the system components from gamma rays and neutrons released by the nuclear fission reaction... the NTAC may function as a radiation shield
Data Source
AI summary
The present disclosure is directed to a system including a nuclear thermal rocket or a nuclear reactor, at least one nuclear electric thruster coupled to the nuclear thermal rocket or the nuclear reactor, and a Nuclear Thermionic Avalanche Cell (NTAC) configured to generate electrical power. The NTAC cell may be positioned around a nuclear reactor core of the nuclear thermal rocket or the nuclear reactor, and the nuclear electric thruster may be powered by the NTAC generated electrical power.